[F] Leftover .tmp file if media file could not be opened for writing

[edrikk]

@anon40688970

-> You'll find an additional tmp file in the directory which must be deleted manually. Otherwise it will stay there forever.

Do you think it is ok to waste space on the user's hard disk without any reason?

If mp3tag is able to diagnose the problem and show a dialog it should also be able to delete the self-created tmp file afterwards.

Yes, this is true. The .tmp file is left behind... This is especially an issue if the file happens to be a 2GB to 4GB .mp4 file...